/**
 * Copyright (c) 2015-2019, Golly Hu 胡高 (3722711@qq.com).
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cn.hg.jfsa.web.directive.column;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import com.jfinal.aop.Aop;
import com.jfinal.plugin.ehcache.CacheKit;
import com.jfinal.plugin.ehcache.IDataLoader;
import com.jfinal.template.Env;
import com.jfinal.template.io.Writer;
import com.jfinal.template.stat.Scope;

import cn.hg.base.jfinal.directive.annotation.JfsaDirective;
import cn.hg.jfsa.common.directive.BaseDirective;
import cn.hg.jfsa.model.Column;
import cn.hg.jfsa.web.service.api.ColumnServiceApi;
import cn.hg.jfsa.web.service.provider.ColumnServiceProvider;

/**
 * @author Golly
 */
@JfsaDirective ("columnList")
public class ColumnListDirective extends BaseDirective {

	@Override
	public boolean hasEnd () {
		return true;
	}

	@Override
	public void onRender (Env env, Scope scope, Writer writer) {
		Map<String, Object> paraMap = this.getAssignedParaMap(scope);
		List<Column> list = CacheKit.get("column", "columnList_" + paraMap.toString(), new IDataLoader() {

			@Override
			public Object load () {
				List<Column> list = ColumnListDirective.this.getColumnService().getColumnList(paraMap);

				for (Column c : list) {
					paraMap.put("parentId", c.getId());
					c.setChildren(ColumnListDirective.this.getColumnService().getColumnList(paraMap));
				}

				return list;
			}

		});
		scope.setLocal(this.getPara("var", scope, "columnList"), new ArrayList<>(list));
		this.renderBody(env, scope, writer);
	}

	private ColumnServiceApi getColumnService () { return Aop.get(ColumnServiceProvider.class); }

}
